Hello, I have a quick questionand cant seem to find anyinfo on the subject. I have a basic Jellyfish tank bought online. It the one from jellyfish art. I believe its the nano.From my understanding any extra food should be suspended for consumption and if theres alot left on the bottom for a prolonged amount of time then I'm over feeding them. Now that aside, would it be possible to put anything in the tank to help eat the extra food. What I really had in mind was a sea sponge. Would they be to abrasive on my jellys? Thanks for the help and I apologise if this has already been covered in a previous thread.